Refrigerating apparatus



Oct. 23, 1928.

D. POWELL REFRIGERATING APPARATUS Filed Aug. 29, 1925 3 Sheets-Sheet 1 Oct. 23, 1928.

D. POWELL REFRIGERATING APPARATUS Filed Aug. 29, 1925 3 Sheets-Sheet 3 m n .1 I 5 Patented Oct. 23, 1928.

UNITED STATES PATENT OFFICE.

DAVID POWELL, OF CHICAGO, ILLINOIS.

REFRIGERATING APPARATUS.

Application filed August 29, 1925. Serial No. 53,244.

My invention relates to refrigerating apparatus, and it has for its principal object the provision of a new and improved arrangement of compartments, together with a new and improved arrangement of cooling means.

for such compartments, whereby superior cooling is effected and increased convenience is attained in the use of the apparatus. It is one of the objects of my invention to increase the extent of surface effective for cooling purposes and to provide a better arrangement of the several cooling surfaces with respect to the space being cooled. It .is another object of my inventlon to provide improved arrangements of coils and connections whereby the cooling shall be caring the entire cooled space merely for the purried out to the best advantage. It is another object of my invention to improve the arrangement of the compartments whereby access may be'had to certain parts of the cooled space without aifecting the remaining por-.

prove devices'of'this type in sundry details hereinafter pointed out. The preferred means by which I have accomplished my several objects are illustrated in the drawings and are hereinafter specifically described.

That which I believe to be new and desire to cover by Letters Patent is set forth in the claims.

-. In the drawings- Fig. 1 is a front face view ofthe upper porv tion of a refrigerator embodying my im proved construction; r

Fig. 2 is a vertical sectional view, substantially as taken at line 22 of Fig. 3;

Fig. 3 is a horizontal sectional view, substantially as taken at line 33 of Fig. 1, but showing certain parts in section in their relative positions at a higher level than said line;

Fig. 4 is a vertical sectional view, substan- I tially as taken at line 4-4 of Fig. 3, but showing certain parts in section at the'uppei' por .tion of the view considerably at one side of the said line; f

. Fig. 5 is a vertical sectional view, taken' substantially at line 55 of Fig. '4;

improved refrigerator, the walls of the cabinet being of any approved form for effecting the desired insulation. The lower partof the chamber is provided with doors 21 and 22 of any approved type at the front face of the cabinet as indicated in Fig. 1.

At a point removed some little distance from the upper end of the cabinet, upon the inner faces of the front and rear walls (see Fig. 4) I provide clips 23 of any suitable type adapted to receive removably therein the ends of the brackets 24, one of such brackets being mounted at each side of the cabinet as indicated in Fig. 2. Each of the brackets as shown in Fig. 7 comprises a bar 25 with two laterally extending bars 26 formed integrally there-with so as to provide an extended support for the cooling apparatus as hereinafter described.

Upon the brackets 24, I mount a brine tank 27 formed of sheet metal comprising an intermediate section and two end sections communicating with the intermediate section at right angles thereto, as is shown in Fig. 3, the tank being substantially in the form of a U. As is clearly shown in Fig. 3, the walls of the tank 27 are at all points spaced from the walls of the cabinet so as to provide for the movement of air between the tank 27 and the walls of the cabinet entirely about the tank. The space between the legs of the tank is partially closed by a perforated plate 28v as shown in Fig. 3, such plate being supported by the arms 26 of the brackets 24, the arrangement being such that the space or compartment above the plate 28 has free communication through the, openings with the space or compartment in the bottom of the cabinet. The front face of the central compartment between the legs of the U tank is closed by a door 29 of any series of cooling coils, and at the upper end of the cabinet I have provided a refrigerating machine for forcing a cooling agent through the coils. This mechanism comprises a motor 30 of any suitable type mounted on top of the cabinet and connected by a belt 31 with a refrigerating machine 32 of any suitable type adapted to force cooling fluid downwardly through a condensing C011 33 and an expansion valve 34 for delivery to the coils as hereinafter described. The condenser coil 33 is best shown in Fig. 5 as being inclosed in a compartment 35 provided immediately below the machine 32 such compartment 35 being cooled to the necessary extent in any suitable manner as is usual, the extent of suchcooling being affected, however, by the fact that the compartment 35 is located in part within the cabinet 20. As is clearly shown in Fig. 6, the expansion valve 34 comprises a shutoff valve in the form of a stem 36 having an opening 37 therethrough, the valve 36 being rotatable by means of a stem 38 for completely closing the passage through the expansion valve. .Access to the valve stem 38 is had through an opening in the rear of the cabinet closed by a door 39 normally held in'position by turn buttons 40.

Referring now particularly to Fig. 3, the expansion valve 34 is seen to be connected with two pipes 41 and 42 leading from the valve to the front ends of the legs of the brine tank, at which point they are connected with pipe coils 43 and 44 respectively, in the construction shown the coils being formed integrally with the pipes 41 and 42. At the rear ends'of the coils 43 and 44,: such coils ar'connected with coil sections 45 and 46 respectively, which extend across the rear of the brine I whereaccessmay be had thereto through the tank 27 in alignment with each other, the adj acent ends of the coil sections 45' and 46 being connected together and being connected with an outlet pipe 47 which leads to a fitting 48 for carrying the pipe through the wall of the tank 27, which in turn is connected .by a nipple 49 with a fitting" 50 connected with a duct 51 leading back to the compressor element of the machine 32. I

By my arrangement of cooling coils, the cooling agent is conducted from the expansion valve 34 first to the front ends of the side coils 43 and 44, from the rear ends of which the agent is delivered to the outer ends of the rear coils 45 and 46 and from thence is conducted back to the machine. By this arrangement the coldest parts of the coils are at the points adjacent to the doors 52 and 53 where the greatest effect of cooling is necessary. I a g I At each side of the central compartment between the legs of the brine tank, I have provided small compartments 54 and 55 located within the coils 43 and 44 respectively, such compartments being open at their front ends doors 52 and 53 above referred to. 'As is clearly shown in Fig. 2, the walls of the compartments 54 and 55 are quite close to the coils 43 and 44 respectively, whereby a very high degree of cold is maintained within said compartments.

Below the brine tank 27, I have mounted a drip pan 56 which is held in position by screws entering the brackets 24, as is best shown in Fig. 4.

By my arrangement of cooling coils, in which the side coil andone section of the rear coil are connected in series with each other at each side of the refrigerator and in which the connected coils at each side are connected in parallel arrangement between the expansion coil and the return pipe 47, Ihave provided for a very even cooling effect.

By my construction, in which the food chamber at the bottom of the cabinet 20 is subject to the cooling effect ofthe entire outer surface of the U tank 27, I have provided a very efiective cooling, the cooling within such food chamber being augmented by the cold air coming into such compartment from the central compartment at the upper end of the cabinet. By my construction in which the auxiliary compartments 54 and 55 are rovided which are capable of being opene independentlyof the remaining portions of the restricted to this construction in detail except as the same may be specifically claimed,

inasmuch as it is evident that changes might be made in the construction without departing from the spirit of my invention.

I claim:

1. In a refrigerating apparatus, the combination of a chamber, a brine tank in the upper end portion of the chamber, compris ing two parts at an angle to each other arranged across the rear and one side of the chamber, a cooling compartment extending through the side part of the brine tank and opening at the front of the tank, and a cooling coil in said brine tank about said compartment and extending transversely from the compartment through the rear part of the brine tank.

2. In a refrigerating apparatus, the combinationr of a chamber, a brlne tank in the upper end portion of the chamber and spaced from the walls thereof, comprising two portions opening into each other substantially at right-angles, with one portion exten ing across the rear of the chamber and the other portion extending across the side thereof, and means for cooling the brine in said tank.

3. Ina refrigerating apparatus, the combination of a chamber, a brine tank in the upper end portion of the chamber, comprising an intermediate portion arran ed across the rear of the chamber and en portions opening into the intermediate portion at right an les thereto, said end portions being arrange across the sides of the chamber,*and means for cooling the brine in said tank.

\4. In a refrigerating apparatus, the c0mbination of a chamber, a brine tank in the upper end portion of the chamber, said tank being in the form of a U extending about the rear and the sides of the chamber, compart ments formed in the legs of said U tank and open atthe front of the chamber, and means vior cooling the brine in said tank.

5. In a refrigerating apparatus, the combination of a chamber, a brine tank in the upper end portion of the chamber, said tank being in the form of a U extending about the partments being open at the front of the chamber.

6. A refri crating apparatus, comprising a chamber, a rine tank in the upper end portion of the chamber and spaced from the walls thereof, said tank being in the form of a U extending about the rear and the sides of the chamber, means for cooling the brine in said tank, and perforated floor means extending across the compartmentbetween the legs of the U tank for permittingcold air to pass from such compartment to the chamber below the tank. DAVID POWELL. 

